I would start with downloading Myfitnesspal and tracking all food eaten for a week. Once he gets a feel for what he's eating he can develop an attack plan. Probably start with a bit of weight training and walking. Get up 50-60 minutes earlier every day and walk half of it then weightlifting the other half. Dropping all liquid calories usually helps.
Small changes first. At 400+ pounds you have to eat a absurd amount of calories to maintain that weight. Simply shaving off a few hunderd calories a day will start weight loss.
Small changes first. At 400+ pounds you have to eat a absurd amount of calories to maintain that weight. Simply shaving off a few hunderd calories a day will start weight loss.